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ethyl 4-oxo-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-2-carboxylate
951626-95-2 AF10493
C9H11N3O3 209.2019
ethyl 4-oxo-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-2-carboxylate
吡唑并[1,5-a]吡嗪-2-羧酸, 4,5,6,7-四氢-4-氧代-,乙酯
95